Haplochthonius (Haplochthonius) Willmann, 1930

Haplochthonius clavatus (Hammer, 1958)

Material examined: Esquel: Adesmia campestris (2). The species was only recorded under grass steppe.

Records in Argentina: Buenos Aires and Salta (Fredes 2018).

Comments: the distribution of species is Neotropical, India and Spain (Subías 2004, update 2018). First record for the province of Chubut.